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SN74221NE4 Arkusz danych(PDF) 11 Page - Texas Instruments |
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SN74221NE4 Arkusz danych(HTML) 11 Page - Texas Instruments |
11 / 23 page SN54221, SN54LS221, SN74221, SN74LS221 DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT TRIGGER INPUTS SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004 11 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION B† CLR Q 3 V 3 V 0 V 0 V VOH VOL ≥ 50 ns CONDITION 4: TRIGGERING FROM POSITIVE TRANSITION OF CLR ≥ 50 ns A‡ CLR Q Q 3 V 3 V 0 V 0 V VOH VOH VOL VOL tw ≥ 60 ns tPLH tPHL tPHL tPLH CONDITION 5: TRIGGER FROM A, THEN CLR A‡ Q Q 3 V 0 V VOH VOH VOL VOL tw CONDITION 6: TRIGGER FROM A tw † A is low. ‡ B and CLR are high. NOTES: A. Input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO ≈ 50Ω; for SN54/74221, tr ≤ 7 ns, tf ≤ 7 ns, for SN54/74LS221, tr ≤ 15 ns, tf ≤ 6 ns. B. All measurements are made between the 1.5-V points of the indicated transitions for the SN54/74221 or between the 1.3-V points for the SN54/74LS221. Figure 1. Switching Characteristics (Continued) |
Podobny numer części - SN74221NE4 |
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Podobny opis - SN74221NE4 |
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